xfs: nothing special about 1-block log sector

	return bbcount > 0 && bbcount <= log->l_logBBsize;

}

/*

 * Allocate a buffer to hold log data.  The buffer needs to be able

 * to map to a range of nbblks basic blocks at any valid (basic

 * block) offset within the log.

 */

STATIC xfs_buf_t *

xlog_get_bp(

	xlog_t		*log,

		return NULL;

	}

	if (log->l_sectbb_log) {

		if (nbblks > 1)

	/*

	 * We do log I/O in units of log sectors (a power-of-2

	 * multiple of the basic block size), so we round up the

	 * requested size to acommodate the basic blocks required

	 * for complete log sectors.

	 *

	 * In addition, the buffer may be used for a non-sector-

	 * aligned block offset, in which case an I/O of the

	 * requested size could extend beyond the end of the

	 * buffer.  If the requested size is only 1 basic block it

	 * will never straddle a sector boundary, so this won't be

	 * an issue.  Nor will this be a problem if the log I/O is

	 * done in basic blocks (sector size 1).  But otherwise we

	 * extend the buffer by one extra log sector to ensure

	 * there's space to accomodate this possiblility.

	 */

	if (nbblks > 1 && log->l_sectbb_log)

		nbblks += xlog_sectbb(log);

	nbblks = round_up(nbblks, xlog_sectbb(log));

	}

	return xfs_buf_get_noaddr(BBTOB(nbblks), log->l_mp->m_logdev_targp);

}

		return EFSCORRUPTED;

	}

	if (log->l_sectbb_log) {

	blk_no = round_down(blk_no, xlog_sectbb(log));

	nbblks = round_up(nbblks, xlog_sectbb(log));

	}

	ASSERT(nbblks > 0);

	ASSERT(BBTOB(nbblks) <= XFS_BUF_SIZE(bp));

		return EFSCORRUPTED;

	}

	if (log->l_sectbb_log) {

	blk_no = round_down(blk_no, xlog_sectbb(log));

	nbblks = round_up(nbblks, xlog_sectbb(log));

	}

	ASSERT(nbblks > 0);

	ASSERT(BBTOB(nbblks) <= XFS_BUF_SIZE(bp));